I have a 921 and love it lots. I like the main wharny blade, and I like the little blade for coring apples, doodling in wood, you name it. That said, a lot of people probably don't like having a second blade. You'd think second blade would cut into your hand while you use the main blade, but because of the shape and thinness of the knife, it doesn't happen when you grip it.
If I (knock on wood this never happens) lost my 921 I have little doubt in my mind that I'd get either the Kulgera or the 940 as an EDC replacement, with the nod going to the Kulgera. I'm absolutely sold on the lock mechanism and its handiness, the ergonomics of the whole series, and the very respectable looks that lets you wear and use the knives in any environment from opera house cheese cutting to river bank fish gut sloshing.